Given your focus on the dove, I suspect that I might have been wrong to suggest earlier that the dove symbolises peace. This is certainly what it symbolises these days, but when looking at the Noah story it may be that it is a contrast for the raven that Noah sends out first. Now, the raven could, in religious terms, symbolise the 'unclean' (scavenger/unholy/black) in contrast to the dove as 'clean' (holy/grey or white), setting up an image of a potentially fractured world-view. But it may take someone with a knowledge of the symbolism of these birds for the time, or for religious contexts, to clarify this.
From the carver actually known as Sam Bell